Spraying attachment



Feb. 2, 1932. E, F, MAR-UNET 1,843,900

SPRAYING ATTACHMENT Filed June 25, 1928 Patented Feb. 2, @32

UNITE TE PATENTv Price EUGENE F. MARTINEZ', OF CLEVELAND, OHIO, ASSIGNORT0 THE P. A. GEIER COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIOSPRAYING ATTACHMENT Application filed June 23,

provision of essentially simple means, and' the rearrangement of partsfor insurmg a 1o cheap, adaptable and eicient appliance of v thisgeneral character, and one not liable to get out of order.

Suction cleaners when operating at normal speed provide an excess ofoutput for the av- 16 erage spraying conditions, but the pressure ofythe air from the outlet is relatively low, so that it is desirable notonly to employ the partial vacuum produced by a controlled outiow forspraying the desired. liquid or 20 powder used, but air pressurepreferably is simultaneously applied interiorly of the container. Thispressure must be instantly relieved when the spraying operation ceases,in order to prevent any overiow from the liquid tube, and consequentwaste.

Accordingly, I have devised a spraying attachment in association withthe liquid con tainer, which permits the escape of air without applyingpressure to the container or affecting the contents by producing anyappreciable vacuum at the tip of the liquid tube. These simple means,shown in two inoditled forms, however, automatically direct aconcentrated air current over the tip of the liquid tube and applypressure interiorly of the container at the same time, when sprayingoperations are begun. Conversely, the air is permitted to escape and thepressure is released automatically, interiorly of the container, whenthe operator releases the attachment'from normal use.

Furthermore, when applying certain classes of sprayed materials, it isdesirable to direct a drying current of air over the sprayed surface, orto use such air currents for spreading or for dissipating powderedmaterials. These requirements also have been kept in mind and adequatelymet by my improvement, thefeatures of which may be exp ained 192s.serial no. 287,840.

in connection with the accompanying drawings, wherein:

Figure l is a view in elevation of a lowpressure spraying attachmentincorporating my lmprovements,

Fig. 2 is a fragmentary view thereof on a larger scale and in verticalsection,

3 is a front view on the same scale,

Fig. 4 is a fragmentary vertical section of a modified form ofattachment,'and

, Fig. 5 is a front view of the device of Fig. 4.

Throughout the several figures of the drawlngs, I have employed the samecharacter of reference to indicate similar parts.

The liquid container, Fig. 1, preferably 05 comprises a glass jar a,which permits the contents to be seen. Its top is screw-threaded toaccommodate the screw cap a' which mounts the composite handle memberand air chamber, terminated by the controlling means, laterdescribed indetail, and the liquid tube a extending nearly to the bottom of the jar.ff; v

Referring to the enlarged showing of the cap and parts mounted thereon,Figs. 2 and 3, 75 it will be seen that the lower portion of the airchamber b is open so that the air from a connected vacuum cleaner hose(not shown) may readlly escape around the sides of the liquid tubewithout affecting the contents of the s0 liquid container. A tubularmember" c, upwardly terminating in anged relation above the compositecontrol member d, slidingly extends diametrically through the airchamber to communicate with the liquid container a.

' These members are acted upon by a compression spring g normallyholding the tube c in its extended position of Fig. 2 with the lug cbearing against the inside edge of the opening in cap a. It will benoted that in this position the elongated slot c in tube 0 1s maintainedexteriorly of, and above the upper wall of the air chamber Z).

When, however, member al and tube c are depressed by the thumb of theuser, assuming that air is being supplied to air chamber b, it will beseen that shortly after the nozzle opening d is brought into registerwith the tip of tube a, the slot o is brought into register with theinterior of the air chamber proportionately with the depression of thetube. As the lianged upper opening is closed by the users thumb, aproportionate amount of air will enter the liquid chamber, therebyproducing a pressure which will assist the partial vacuum initiallyproduced at the tip of liquid tube a for elevating and spraying thecontents of the jar. An opening d in the reetangular extension cl3 ofcomposite member d, registers with the liquid tube and permits themember d to be de ressed until the extension d3 abuts the top o thescrew cap a', whereby the maximum spraying effect is obtained.

Accordingly, the user is able to obtain readily controlled and variablespraying effects merely by regulating the depression of members c and d,with the corresponding variation in the positions of slot c and noz- Zled', which is narrowed in its upper portion, as will be observed by theshowing in Fie. 3.

lan the completely depressed position, slot c is fully entered withinthe air chamber, thereby introducing maximum air pressure to the closedjar a, while the partial elevation of tube c will correspondinglywithdraw the slotted opening from the air chamber, and immediately theslot rises above said air chamber, normal air pressure is restoredwithin the jar, since the slot serves then as a vent. Moreover, if theuser suddenly finds it nec essary to discontinue spraying operations, heinstantly removes his thumb from its closed position of tube c,whereupon the air pressure is even more promptly released from the jarand spraying operations automatically are checked, with no waste ofliquid from the jar.

The spraying attachment shown in Fi s. 4 and 5 is of modified type, inthat the cylinder e, having respectively, inlet and vent openings, e',e, is rotatable as the control member d is depressed, by means of thespiral stem f, which passes through a slot f in the upper wall of airchamber b. The depresto its inert or forward position, and ventingy theair laterally through e, when the position of Fig. 4 is reached.

It will be seen that the same general purposes and results areattainable with both modifications of my improvement, since the nozzleis brought into o erative relation with the tip of the liquid tu econcurrently with the actuation of the duct member of each for closingthe external air vent and then trapping the air variably in the airpressure chamber to produce an operating pressure within the closedliquid container. The sliding closure member of each is positioned bythe rectangularly extending perforated portion embracing the 4liquidtube, normally with a shielding section deilecting the air away from thetip of said tube, so that the air currents may escape and be made usefulfor drying purposes, and the like.

vVith the nozzle having a substantially pear-shaped opening, the aircurrents may be variably focused over and about the tip of the liquidtube in order to produce different spraying effects, depending upon thedepression of the controlling member, which involves no furtherregulating or valve mechanism for controlling the flow of air.

Both appliances are simple and cheap to construct and they automaticallyapply and relievetheairpressurewithinthe liquid container, alternativelyto augment the liquid supply or to prevent its waste. l may say thatwhile employing the expressions, liquid container or liquid tubedescriptively herein, and in the claims, it should be understood that myimprovements are not thereby restricted, and are intended to include thespraying of any suitable liquids, powders, and the like.

Having now described and shown modified embodiments of my improvement, Ihereby claim and desire to secure by Letters Patent, the following:

' l. In a spraying attachment, the combination with a liquid containerand its protruding liquid tube, of an air chamber forwardly openadjacent to the tube, and a control member slidably positioned betweenthe open end and said tube having a shielding portion for the tip of thelatter and a verti cally graduated opening adapted to be brought intoregister therewith, substantially as set forth.

2. In a spraying attachment, the` combination with a liquid containerand its protruding liquid tube, of an air chamber forwardly openadjacent to the tube, and a sliding closure member therefor, comprisinga shielding portion for the tip of said tube, a positioning memberembracing the tube, and a nozzle member adapted to be brought intoregister therewith, substantially as set forth.

3. In a spraying attachment, the combination with a liquid container andits protruding liquid tube, of an air chamber, a nozzle member thereforhaving a discharge opening of graduated size adapted to be variablybrought into register with the tip of the liquid tube, and means foreffecting the relative movement of said nozzle member with respect tothe tip of the liquid tube, whereby variable spraying eects areobtained, substantially as set forth.

4. In a spraying attachment, the combination with a liquid container andits protruding liquid tube, of an associated air chamber forwardly openadjacent to the tube, a sliding closure member therefor, comprising ashlelding portion for the tip of said tube and a nozzle member adaptedalternatively to be brought into register therewith, a sliding ductmember extending from the air chamber into the liquid container normallopen to the external air and having a slotte opening, and a thumb piececonnecting the latter and said closure member, whereby the external airopening temporarily is closed upon concurrently actuating the connectedparts, substantially as set orth.

In testimony whereof l do now aix my signature.

EUGENE F. MARTINET.

